From: Dave Hansen <dave@sr71.net>
To: Paul Sladen <thinkpad@paul.sladen.org>
Cc: Alejandro Bonilla <abonilla@linuxwireless.org>,
Vojtech Pavlik <vojtech@suse.cz>, Pavel Machek <pavel@suse.cz>,
linux-thinkpad@linux-thinkpad.org,
Eric Piel <Eric.Piel@tremplin-utc.net>,
borislav@users.sourceforge.net,
"'Yani Ioannou'" <yani.ioannou@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
hdaps devel <hdaps-devel@lists.sourceforge.net>
Subject: Re: [Hdaps-devel] Re: [ltp] IBM HDAPS Someone interested? (Userspace accelerometer viewer)
Date: Mon, 11 Jul 2005 09:21:35 -0700 [thread overview]
Message-ID: <1121098895.15095.2.camel@localhost> (raw)
In-Reply-To: <Pine.LNX.4.21.0507111011170.25721-100000@starsky.19inch.net>
On Mon, 2005-07-11 at 10:42 +0100, Paul Sladen wrote:
> The sensor gives us two 10-bit AD values (corresponding to 0..1 volts on the
> ADI chip), temperature (Celsius) and three status bits indicating:
>
> * lid open/closed
Which bit did you find this in? I haven't tried with the lid closed.
> * keyboard activity
> * nipple movement
Technically, it's mouse movement :) I think it gets set on my T41p when
I'm using the touchpad.
> On the X40 I borrowed (thanks Robert McQueen), at rest the outputs hover
> around 512 (0x200). Gravity is supposed to fall off in a sine-wave during
> rotation, but I found that:
>
> theta = (N - 512) * 0.5
>
> provides a surprisingly good approximation for pitch/roll values in degrees
> in the range (-90..+90) so I think the sensor can do ~= +/-2.5G .
Interesting.
-- Dave
next prev parent reply other threads:[~2005-07-11 16:32 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <42B6F6F6.2040704@zipman.it>
2005-06-20 17:28 ` [ltp] Re: IBM HDAPS Someone interested? Alejandro Bonilla
2005-06-20 19:51 ` Yani Ioannou
2005-06-20 20:11 ` Yani Ioannou
2005-06-20 20:25 ` Alejandro Bonilla
2005-06-20 20:34 ` Yani Ioannou
2005-06-20 20:48 ` Alejandro Bonilla
2005-06-20 21:35 ` Lee Revell
2005-06-20 21:57 ` Alejandro Bonilla
2005-06-20 23:35 ` Lee Revell
2005-06-22 10:49 ` Pavel Machek
2005-06-22 12:50 ` Alejandro Bonilla
2005-06-23 7:13 ` Vojtech Pavlik
2005-06-23 10:06 ` Eric Piel
2005-06-23 12:53 ` Alejandro Bonilla
2005-06-23 13:18 ` Vojtech Pavlik
2005-06-23 20:22 ` Eric Piel
2005-06-23 20:42 ` Lee Revell
2005-06-25 6:17 ` [ltp] IBM HDAPS Someone interested? (Accelerometer) Paul Sladen
2005-06-25 11:31 ` Vojtech Pavlik
2005-06-25 14:47 ` Pavel Machek
2005-06-25 15:00 ` Vojtech Pavlik
2005-06-25 18:14 ` Alejandro Bonilla
2005-06-25 20:14 ` Vojtech Pavlik
2005-06-27 12:33 ` Lenz Grimmer
2005-06-27 13:10 ` Alejandro Bonilla
2005-06-27 21:02 ` Lee Revell
2005-06-28 3:22 ` Alejandro Bonilla
2005-06-28 5:40 ` Lee Revell
2005-06-28 15:40 ` Vojtech Pavlik
2005-06-25 18:13 ` Alejandro Bonilla
2005-06-25 20:09 ` Vojtech Pavlik
2005-06-25 22:41 ` Alejandro Bonilla
2005-06-27 3:35 ` [Hdaps-devel] " Shawn Starr
2005-07-03 8:37 ` Alejandro Bonilla
2005-07-03 10:16 ` Vojtech Pavlik
2005-07-03 11:07 ` Jesper Juhl
2005-07-03 18:17 ` Jesper Juhl
2005-07-03 19:21 ` [Hdaps-devel] " Dave Hansen
2005-07-03 18:29 ` Alejandro Bonilla
2005-07-03 19:37 ` Dave Hansen
2005-07-03 19:42 ` Jesper Juhl
2005-07-03 18:52 ` Alejandro Bonilla
2005-07-03 19:42 ` Henrik Brix Andersen
2005-07-03 20:03 ` Jesper Juhl
2005-07-03 20:53 ` Tomasz Torcz
2005-07-03 19:41 ` Dave Hansen
2005-07-11 9:42 ` [ltp] IBM HDAPS Someone interested? (Userspace accelerometer viewer) Paul Sladen
2005-07-11 14:26 ` Alan Cox
2005-07-11 16:53 ` [Hdaps-devel] " Dave Hansen
2005-07-11 17:31 ` Paul RIVIER
2005-07-11 20:09 ` [Hdaps-devel] " Daniel Willmann
2005-07-12 15:55 ` Dave Hansen
2005-07-11 15:13 ` Pavel Machek
2005-07-12 9:41 ` Matthew Garrett
2005-07-11 16:21 ` Dave Hansen [this message]
2005-07-13 16:27 ` [Hdaps-devel] " Alejandro Bonilla
2005-06-25 17:42 ` [ltp] IBM HDAPS Someone interested? (Accelerometer) Alejandro Bonilla
2005-06-27 10:36 ` P
2005-06-23 15:33 ` [ltp] Re: IBM HDAPS Someone interested? Jan Knutar
2005-06-23 17:08 ` Lee Revell
2005-06-23 20:47 ` Andrew Haninger
2005-06-24 9:16 ` P
2005-06-24 12:56 ` Alejandro Bonilla
2005-06-24 17:20 ` Alejandro Bonilla
2005-06-20 20:53 ` Vojtech Pavlik
[not found] ` <005b01c575bd_724fac60_600cc60a@amer.sykes.com>
2005-06-20 20:25 ` Pavel Machek
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